WIP: Add speech-tools and festival ebuilds to be used by TDEAccessibility. #154

This needs the CMake conversion to be done at TDE level by @cethyel first, which is WIP right now. 😸

Because the Gentoo developers couldn't wait until the users worked on some festival ebuild, they removed the whole festival engine from Portage. This engine does mostly all the magic of kttsd, compareable to K3b and the cdrecord. Other engines could be used in theory too.

The last included version was 2.1. anyway, which was at least working. Meanwhile 2.5 is out and there is some already draft kind of ebuild for that version existing, which we will need to import to our overlay and maybe add some further changes to it. It should support a wide field of voices for different languages out of the box.

But for other languages (like German) the fun begins. There has to be some USE which add patches, or some extra ebuild, to build a specific patched festival engine, which makes use of MBROLA voices.

Luckily that was updated to work with festival 2.5 too. Also new MBROLA releases are out there. So maybe we can add that too. (Gentoo is at 3.0, but the GH of the projects shows 3.3)

At least we should note here that with GCC10, fno-common will make problems for Festival. So we should most likely add -fcommon to it.

At least the listing of festival ebuilds should give us a good coverage of most spread languages.

30.04.2020:

It seems at least the old voices like festival-it, which worked with festival 2.1 and 2.4 are broken now for 2.5. Also, festival-ru works only one time, after that, it starts to output crepy noises. I will try to fix festival-ru, but if not, I just will add it in the hope here is someone doing more investigation about that.

It seems also that the Debian people found at least some fix for the language file of festival-it, to work with 2.5. I will look for the other languages what patches Debian is using. So we don't need to support some 2.1 or 2.4 version of festival at the same time.

I also found possible alternatives for kttsd to use, because you can specify some command for TTS. One of that is espeak-ng (Very lightweight but quality should be not as good, but is able to use MBROLA voices - Not in Portage right now). Another one would be svox (From G00gle/Andr0id - Should have the best quality of all - Currently not in Portage and not maintained anymore, but still used). The question would be, if it makes sense to add them to the overlay. Maybe at TDE level there selection could be added to kttsd too. To have more modern alternatives?

About en it is to say that festival supports that out of the box, but the quality seems to be not as good. Better quality you can get, if you use the MBROLA voices. Festival and other TTS programs are using MBROLA for the voices. Again better voices, you can get with festival-hts. There seems to be one voice (in the festival-hts package), which seems to be the best of all. The question is, if it is working with festival 2.5 and if not, what patches (if any existing) would be needed. It is also to note that most voices not got any love since 2010 around. State of the art TTS in Linux still.

The download of all the included festival voices is very large and most will not need the indic voices. So maybe it would make sense to add some cmu and/or l10n_* USE to the festival ebuild.

Currently lacking:

festival-2.5.ebuild (Festival) - Mostly done
speech-tools-2.5.ebuild (Festival) - Mostly done
festival-ims-1.4beta.ebuild (MBROLA 3.3 + Festvial 2.5 - German - Maybe)
festival-it.ebuild (Was in Portage before)
festival-ru.ebuild (Was in Portage before)
festival-fi.ebuild (Was in Portage before)
festival-hts.ebuild (Was in Portage before)
festival-es.ebuild (Was NOT in Portage before)
festival-cz.ebuild (Was NOT in Portage before)
mbrola-3.3.ebuild (Maybe - MBROLA 3.0, in Portage, binary only)
akode-9999.ebuild - Mostly done
tdemultimedia-arts-9999.ebuild - Mostly done

References:

http://festvox.org/
https://github.com/numediart/MBROLA
http://deb.debian.org/debian/pool/main/f/festival/festival_2.5.0-4.debian.tar.xz (Debian Patches - 22)

Signed-off-by: Chris xchrisx@uber.space

This needs the CMake conversion to be done at TDE level by @cethyel first, which is WIP right now. :smile_cat: Because the Gentoo developers couldn't wait until the users worked on some `festival` ebuild, they removed the whole festival engine from Portage. This engine does mostly all the magic of `kttsd`, compareable to K3b and the cdrecord. Other engines could be used in theory too. The last included version was `2.1.` anyway, which was at least working. Meanwhile `2.5` is out and there is some already draft kind of ebuild for that version existing, which we will need to import to our overlay and maybe add some further changes to it. It should support a wide field of voices for different languages out of the box. But for other languages (like German) the fun begins. There has to be some USE which add patches, or some extra ebuild, to build a specific patched festival engine, which makes use of MBROLA voices. - (See https://aur.archlinux.org/packages/festival-ims, as example) - https://www.ims.uni-stuttgart.de/institut/arbeitsgruppen/ehemalig/ep-dogil/synthesis/festival_opensource.html Luckily that was updated to work with festival `2.5` too. Also new `MBROLA` releases are out there. So maybe we can add that too. (Gentoo is at `3.0`, but the GH of the projects shows `3.3`) At least we should note here that with GCC10, `fno-common` will make problems for Festival. So we should most likely add `-fcommon` to it. At least the listing of festival ebuilds should give us a good coverage of most spread languages. **30.04.2020:** It seems at least the old voices like `festival-it`, which worked with festival `2.1` and `2.4` are broken now for `2.5`. Also, `festival-ru` works only one time, after that, it starts to output crepy noises. I will try to fix `festival-ru`, but if not, I just will add it in the hope here is someone doing more investigation about that. It seems also that the Debian people found at least some fix for the language file of `festival-it`, to work with `2.5`. I will look for the other languages what patches Debian is using. So we don't need to support some `2.1` or `2.4` version of festival at the same time. I also found possible alternatives for `kttsd` to use, because you can specify some command for TTS. One of that is `espeak-ng` (Very lightweight but quality should be not as good, but is able to use MBROLA voices - Not in Portage right now). Another one would be `svox` (From G00gle/Andr0id - Should have the best quality of all - Currently not in Portage and not maintained anymore, but still used). The question would be, if it makes sense to add them to the overlay. Maybe at TDE level there selection could be added to `kttsd` too. To have more modern alternatives? About `en` it is to say that festival supports that out of the box, but the quality seems to be not as good. Better quality you can get, if you use the MBROLA voices. Festival and other TTS programs are using MBROLA for the voices. Again better voices, you can get with `festival-hts`. There seems to be one voice (in the festival-hts package), which seems to be the best of all. The question is, if it is working with festival `2.5` and if not, what patches (if any existing) would be needed. It is also to note that most voices not got any love since 2010 around. State of the art TTS in Linux still. The download of all the included festival voices is very large and most will not need the indic voices. So maybe it would make sense to add some `cmu` and/or `l10n_*` USE to the festival ebuild. **Currently lacking:** - festival-2.5.ebuild (Festival) - Mostly done - speech-tools-2.5.ebuild (Festival) - Mostly done - festival-ims-1.4beta.ebuild (MBROLA 3.3 + Festvial 2.5 - German - Maybe) - festival-it.ebuild (Was in Portage before) - festival-ru.ebuild (Was in Portage before) - festival-fi.ebuild (Was in Portage before) - festival-hts.ebuild (Was in Portage before) - festival-es.ebuild (Was NOT in Portage before) - festival-cz.ebuild (Was NOT in Portage before) - mbrola-3.3.ebuild (Maybe - MBROLA 3.0, in Portage, binary only) - akode-9999.ebuild - Mostly done - tdemultimedia-arts-9999.ebuild - Mostly done **References:** - http://festvox.org/ - https://github.com/numediart/MBROLA - http://deb.debian.org/debian/pool/main/f/festival/festival_2.5.0-4.debian.tar.xz (Debian Patches - 22) Signed-off-by: Chris <xchrisx@uber.space>

I did rebase and solve conflicts of this old PR and seem to be the only difference that is here is ebuilds for external applications – festival and speech-tools.

WIP: Add speech-tools and festival ebuilds to be used by TDEAccessibility. #154

WIP: Add `speech-tools` and `festival` ebuilds to be used by `TDEAccessibility`. #154